devapp/devappserver: add Dockerfile in preparation for running on GKE

Since we can’t run an App Engine Flex app on *.golang.org (see
issue), the Flex app.yaml file is removed.

Updates golang/go#20691

Change-Id: Id775962349a88b119c9fe671f9a5180f70528836
Reviewed-on: https://go-review.googlesource.com/46133
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

devapp/devappserver/.gitignore

@@ -0,0 +1,2 @@
+devappserver
+ca-certificates.crt

devapp/devappserver/Dockerfile

@@ -0,0 +1,8 @@
+# Copyright 2017 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+FROM scratch
+LABEL maintainer "golang-dev@googlegroups.com"
+COPY ca-certificates.crt /etc/ssl/certs/
+COPY devappserver /
+ENTRYPOINT ["/devappserver"]

devapp/devappserver/Dockerfile.0

@@ -0,0 +1,46 @@
+# Copyright 2017 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+FROM golang:1.8
+LABEL maintainer "golang-dev@googlegroups.com"
+
+RUN go get -d github.com/aclements/go-gg/generic/slice && \
+    go get -d github.com/aclements/go-gg/gg && \
+    go get -d github.com/aclements/go-gg/ggstat && \
+    go get -d github.com/aclements/go-gg/table && \
+    cd /go/src/github.com/aclements/go-gg && git reset --hard abd1f791f5ee99465ee7cffe771436379d6cee5a
+
+RUN go get -d github.com/aclements/go-moremath/stats && \
+    cd /go/src/github.com/aclements/go-moremath && git reset --hard 033754ab1fee508c9f98f2785eec2365964e0b05
+
+RUN go get -d github.com/google/go-github/github && \
+    cd /go/src/github.com/google/go-github && git reset --hard 7a51fb928f52a196d5f31daefb8a489453ef54ff
+
+RUN go get -d github.com/kylelemons/godebug/pretty && \
+    cd /go/src/github.com/kylelemons/godebug && git reset --hard a616ab194758ae0a11290d87ca46ee8c440117b0
+
+RUN go get -d golang.org/x/net/context && \
+    cd /go/src/golang.org/x/net && git reset --hard fe686d45ea04bc1bd4eff6a52865ce8757320325
+
+RUN go get -d golang.org/x/oauth2 && \
+    cd /go/src/golang.org/x/oauth2 && git reset --hard f047394b6d14284165300fd82dad67edb3a4d7f6
+
+RUN go get -d golang.org/x/sync/errgroup && \
+    cd /go/src/golang.org/x/sync && git reset --hard f52d1811a62927559de87708c8913c1650ce4f26
+
+# Optimization to speed COPY+go install steps later. This go install
+# isn't required for correctness.
+RUN go install github.com/aclements/go-gg/generic/slice \
+    github.com/aclements/go-gg/gg \
+    github.com/aclements/go-gg/ggstat \
+    github.com/aclements/go-gg/table \
+    github.com/aclements/go-moremath/stats \
+    github.com/google/go-github/github \
+    github.com/kylelemons/godebug/pretty \
+    golang.org/x/net/context \
+    golang.org/x/oauth2 \
+    golang.org/x/sync/errgroup
+
+COPY . /go/src/golang.org/x/build/
+
+RUN go install -ldflags "-linkmode=external -extldflags '-static -pthread'" golang.org/x/build/devapp/devappserver

devapp/devappserver/Makefile

@@ -0,0 +1,35 @@
+# Copyright 2017 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+VERSION=latest
+DOCKER_IMAGE_build0=build0/devappserver:latest
+DOCKER_CTR_build0=devappserver-build0
+
+build0: *.go Dockerfile.0
+	docker build --force-rm -f Dockerfile.0 --tag=$(DOCKER_IMAGE_build0) ../..
+
+devappserver: build0
+	docker create --name $(DOCKER_CTR_build0) $(DOCKER_IMAGE_build0)
+	docker cp $(DOCKER_CTR_build0):/go/bin/$@ $@
+	docker rm $(DOCKER_CTR_build0)
+
+ca-certificates.crt:
+	docker create --name $(DOCKER_CTR_build0) $(DOCKER_IMAGE_build0)
+	docker cp $(DOCKER_CTR_build0):/etc/ssl/certs/$@ $@
+	docker rm $(DOCKER_CTR_build0)
+
+docker-prod: Dockerfile devappserver ca-certificates.crt
+	docker build --force-rm --tag=gcr.io/symbolic-datum-552/devappserver:$(VERSION) .
+docker-dev: Dockerfile devappserver ca-certificates.crt
+	docker build --force-rm --tag=gcr.io/go-dashboard-dev/devappserver:latest .
+
+push-prod: docker-prod
+	gcloud docker -- push gcr.io/symbolic-datum-552/devappserver:$(VERSION)
+push-dev: docker-dev
+	gcloud docker -- push gcr.io/go-dashboard-dev/devappserver:latest
+
+.PHONY: clean
+clean:
+	$(RM) devappserver
+	$(RM) ca-certificates.crt

devapp/devappserver/app.yaml

@@ -1,13 +0,0 @@
-# YAML file necessary to deploy to App Engine Flex.
-#
-# To deploy, run "gcloud app deploy". You will need to sign up for an account
-# and configure your local gcloud settings.
-#
-# As of March 2017 deployments take 4-8 minutes (to upload all files, build
-# a Docker container, and provision that container onto multiple servers). Note
-# that libraries will be deployed as they exist on your local filesystem, so
-# ensure third party dependencies are up to date.
-#
-# More info: https://cloud.google.com/appengine/docs/flexible/go/quickstart
-runtime: go
-env: flex